Maxx Gear stimulation ring by Nasstoys. 100% Silicone. Intensive vibrations. Pleasure for him and her with nubs on ring. Waterproof vibrator. Phthalates free materials cock ring silicone, bullet vibrator ABS plastic. Size length 2.5 inches, diameter 1.875 inches. Bullet vibrator requires 2 LR41 batteries, included. Color Black.